Vertical graining machine



April 16, 1935. 5 VON wEBERN ET AL 1,997,612

VERTICAL GRAINING MACHINE Original Filed Nov. 9, 1929 2 Sheets-Sheet 1 Z2 mg I: H l/ :I 7 33 u I 3 @w r 20 FIG. 1

O ll FIG. 2

WANG/1A April 1 G. VON WEBERN ETAL 1,997,612

' I VERTICAL GRAINING MACHINE Original Filed Nov. 9, 1929 2 Sheets-Sheet2 I I HIHII IHIHIIIIHILIM Z8 6 g N /Z 1 In r 1 I T 74V? I 33-? M/ 1 \(1(ll /z30 f r mg 5 r g 5/ l Mk FIG. 3

Patented 7 Apr. 16, 1935 'VERTICAL GRAINING MACHINE Guido von Webern andEdward William Hamant,

Dayton, Ohio, assignors to Oxford Varnish Corporation, Detroit, Mich acorporation of Michigan r Original application November 9, 1929, SerialNo. 406,018. Divided and this application August 8, 1932, Serial No.627,818. In Great Britain May 25, 1932 8 Claims. (01. 101-4166) Thisinvention relates to an improved method and apparatus for supplying inkor pigment to substantially vertical printing elements, such as rolls.While our device may be used in any machine where it is desirable tofeed ink to a substantially vertical surface, we have illustrated thedevice as applied to a vertical graining machineas described in ourcopending application, Serial No. 406,018, filed November 9th, 1929, andof which this application is a division.

In the drawings, Fig. l is a sectional plan view showing the generalarrangement of parts of a graining machine,

Fig. 2-is a longitudinal vertical sectional view thereof taken along theline 2-2 of Fig. 1, and

Fig. 3 is a transverse sectional view taken along the line 3-3 of Fig.1.

' Referring now to the drawings, the machine shown is a vertical surfacegraining machine adaptedfor graining surfaces disposed vertically, ornearly so. The primary elements of the machine comprise a pattern rolll, a. transfer roll 2 and may include a pressure roll or platen 3, forcarrying the work to be grained or otherwise dec0- rated, into printingcontact with the transfer r011.

At this point it may be stated that it is not essential that there be aseparate pattern element such as shown, inasmuch as the pattern transferroll 2 may have the design formed thereon. The pattern transfer elementmay further be embodied in shapes other than cylindrical rolls. Forexample, it may comprise a belt or a. ribbed or grooved generallycylindrical roll adapted for impressing surfaces other than generallysmooth surfaces suchas shown on the blank in the machine.

The elements mentioned may be supported on main machine frame memberscomprising, as shown, a standard 5 and a sub-base 6, carried thereby inany suitable manner and secured as by bolts not shown. The pattern andtransfer roll are supported on the sub-base as will now be described. v

Referring to Figs. 1, 2 and 3, the pattern roll which is "shown as ahollow cylinder having a central shaft "I, may have any suitable patternthereon. For example, an intaglio pattern of a wood grain design may beetched on the outer surface in any suitable way. The shaft 1 extendsdownwardly through a boss formation 8 on the sub-base 6 at one end' andextends upwardly through an overhanging cross bar 9 secured as on postsl0 and II, the connection to only one ofthese posts, namely, Ill, beingshown. The bar may be removably secured as by hand screws, one of whichis shown at it, Fig. 3. The lower end of the shaft '5 has associatedtherewith a driving arrangement for the pattern roll.

The transfer roll 2 may comprise a suitable ring of resilient material,such as congealed glue and glycerine on a suitable core 115, and has adriving shaft at it. The driving shaft may be carried on a rockingsupport or frame ll which has upper and lower arm portions l8 and isjoined by apost 20 rising from the sub-base t and a vertical end bar 22joining the arms 88 and l9. The purpose of the swinging mounting is sothat the transfer roll may be carried out of contact with the patternroll whenever the ma.- chine is left standing'idle. The transfer roll isalso driven positively in the machine shown.

A description of the driving mechanism for the pattern and transferrolls is not given here as it is fully described in our co-pendingapplication, Serial No. 406,018. The driving mechanism for the pressureroll or platen 3 is described in our copending application, Serial No.456,337, filed May 28, 1930.

To supply pigment to the pattern roll l, we provide a device comprisingessentially, pigment raising means in the nature of a pump for conveying pigment material from a reservoir to alongside the pattern rolland distribute an adequate quantity of the same uniformly on thepattern. The pigment supplying device is best shown in Figs. 1 and 3,and will now be described.

In the last-mentioned figures, there is shown an ink supply tank 26removably'carried on the under side of the base member 6 as on L-shapedbrackets 21, these bracket arrangements permitting the tank to be slidbeneath the base member, like the drawer of a cabinet. The tank may bewithdrawn from beneath the base 6 sufficiently to allow the pigmentsupply to be replenished, from time to time, notwithstanding the factthat,

as shown, the tank cannot ordinarily be fully withdrawn.

Above the pigment supply tank, the body portion 5i of the base memberhas an opening I02 roll. The face 25" is spaced apart from the patternplate a distance determined by the thick ness of the layer of pigment itis desired to place on the pattern plate. This distance may be varied,as will be hereinafter shown.

The tube is supported in vertical position by a rigid arm 32 extendinglaterally from the tube and having at one end a clamping yoke I08embracing the post II, which supports one end of the pattern rollsupporting arm 96. The adjustment to determine the .distance between theface 25" of the tube and the surface of the pattern roll, may beeffected by a set screw 34 supported in a suitable post 33 back of thetube, the screw having its working end bearing against the tube, asshown in Fig. 3.

The pigment lifting screw 28 is preferably formed, as shown in Fig. 3,wherein it will be seen that the thread faces which are uppermost aresubstantially flat, while the under faces of the screw threads aresteeply beveled to provide a coarse thread. The screw fits the insidesurface II2 of the tube with very little clearance, the surface of thetube being broken at one side of the tube by reason of the face 25"intersecting the cylinder on which the inside surface I I2 is formed.This leaves an elongated opening substantially the length of the patternroll through which the pigment carried up by the screw is spread ontothe pattern roll.

The screw 28 has a bearing at its lower end which, as shown, comprises aremovable apertured insert 29 of suitable bearing forming material, theaperture receiving the reduced end IIG of the screw. At its upper end,the screw has a reduced shaft portion 28 which extends through asuitable bearing insert III held in place by a cover plate II8. At itsupper end, the shaft 28' carries a spur gear 30, which meshes with aspur gear 3| surmounting and fixed to the pattern roll driving shaft I.When the pattern roll is taken out bylifting the same upwardly, with thecross bar 86. as described, the gears are simply slid out of mesh.

In a graining machine wherein the graining rolls are vertical, or nearlyso, the matter of reclaiming the used pigment material presents quite aproblem. As shown, there is a continuous wall effect 230 rising from thebase 6 and surrounding the pattern roll the transfer roll and pigmentapplying device. Within the wall is a substantial depression 23I whichreceives all the pigment materialscraped or otherwise ejected from therolls and which conveys this pigment material back to the pigment supplytank 26. Preferably, the floor of the depression slopes generally towardthe ope ing I02 through which the screw tube 25 extends loosely.

To favor the discharge of used pigment toward the opening and to preventaccumulation of pigment beneath the pattern roll, the latter may have adepending wiping blade 235, as shown in Fig. 3. The wiping blade isarranged to contact with the floor of the depression formed by the wall230 to urge the pigment material lying upon the bottom of the depressiontoward the opening I02. The blade 235 may be arranged at an angle inaccordance with the rotation of the roll I, as indicated in broken linesin Fig. 1.

The pattern and transfer rolls are equipped with scraper blades and itis highly desirable, if not essential, to reciprocate ti 2 scraper bladewhich contacts with the pattern plate of the pattern roll so as toprevent wearing grooves in the etched surface thereof. It is practicallyessential to separate the scraper blade of the transfer roll from thisroll whenever the machine is left standing idle so as to prevent thescraper blade from leaving a permanent depression in the transfer rollsurface.

The scraper blades are shown at 40 and I, but further description isomitted here, as they are fully described in our co-pending application,Serial No. 406,018.

The platen or pressure roller 3 may be supported adjacent the transferroll by a swingable arm I00. The arm may be pivotally mounted at I onthe frame 5. The free end 'of the arm may be provided with a suitablehandle I01.

While we have shown in detail a machine operating on the offset printingprinciple; that is to say, with a pattern roll carrying a primarypattern element, the etched plate, and a transfer roll for taking thepigment from such pattern roll, it is obvious that, insofar as thegeneral arrangements are concerned, thetransfer or composition roll maycarry the pattern. In such event, the pigment applying device wouldoperate directly on the transfer roll and the pattern roll would beomitted.

We claim:

1. A mechanism for supplying ink material to a substantially verticalprinting member, comprising means for feeding the material along avertically extending tube adjacent the periphery of the member and meansfor spreading the material directly from the tube on the member throughside opening in the tube.

"2. An apparatus for supplying liquid pigment material to asubstantially vertical graining roll, comprising a vertically extendingtube having an opening in its side wall, means for feeding the materialupwardly within said tube adjacent the roll and spreading the materialdirectly on the roll through the side opening in the tube.

3. In a graining machine, a graining roll arranged on a substantiallyvertical axis, means for driving the roll, a pigment supply devicecomprising a container for pigment, a tube alongside said roll and meansto force pigment from the container along the tube; the tube having aslotted elongated vertical opening adjacent the roll through which theforced pigment is spread ontd the roll.

4. A pigment applying device for a graining roll, comprising, a pigmentconveying tube adapted to be positioned adjacent the roll substantiallyparallel to the axis thereof, said tube having an elongated throughopening in the side thereof adjacent the roll and having a widened faceadjacent the opening substantially parallel to the general 'ro'llsurface, means to adjust said face toward and away from the roll, andmeans to force pigment material along the tube.

5. In a graining machine, wherein there is a substantially verticalpattern roll, pigment supply means below the roll, a tube having one endcommunicating with said pigment supply, a lift screw in the tube, andmeans for driving the screw, the tube having an opening adjacent theroll through which the pigment material is spread directly onto thepattern roll.

6. A pigment-applying device for a graining roll, comprising apigment-conveying tube adapted to be positioned adjacent the roll andsubstantially parallel with the axis thereof, said tube having anelongated opening in the side wall thereof, said tube being sopositioned that the periphery of the roll projects into andsubstantially closes the opening in said tube, and means to forcepigment material along the tube.

'7. A pigment-applying device for a graining roll, comprising apigment-conveying tube adapted to be positioned adjacent the roll.substantially parallel with the axis thereof, said tube having anelongated slot in its side walls, the walls of the slot beingsubstantially parallel with 5 the axis of the rolland arcuately shapedto substantially conform with the general contour of said roll.

8. A pigment-applying devicefor a graining roll, comprising apigment-conveying tube adapted to be positioned adjacent the rollsubstantially parallel with the axis thereof, said tube having anelongated opening through the side thereof adjacent the roll, means toadjust said tube to- Y ward and away from the roll, and means to force 5pigment material along the tube.

GUIDO. voN WEBERN. EDWARD WILLIAM

